Percolator.



C. A. STELLE.

` Patented Nov. 2, 1909.

Cil

CHARLES A. STELLE, OF CHICAGO, ILLINIS.

PERCOLATOR.

Specification of Letters Patent.

Patented Nov. 2, 1909.

Application filed August 3, 1908. Serial No. 446,728.

To all 'whom it may concern:

Be it known that I, CHARLES A. STELLE, a citizen of the United States,residing in Chicago, in the county of Cook and State of illinois, haveinvented a new and useful 1mprovement in Percolators, of which thefollowing is a specification.

This invention relates to what are now generally known amongmanufacturers and jobbers as one piece or one part percolators, that isto 'say percolators having only the single receptacle or containingvessel, as distinguished from the two part percolators which embody notonly the main vessel of the one part percolator, but in addition theretoan inner vessel in which the sugar and water are placed at thecommencement of the percolating operation and from which the syrup dropsinto a suitable chamber or part of the main vessel. A type of the onepart percolators is shown in Patent No. 774,010, dated November 1, 1904,and granted to TWilliam B. Webber.

My invention is an improvement upon this class of percolators, andrenders more convenient the securing in place therein and removal of thefiltering devices therefrom.

rlhe nature of the invention is fully explained below and illustrated inthe accompanying drawing, in which latter- Figure 1 is a verticalsection of my improved percolator. Figs. 2 and 3 are sections on thelines 2 2 and 3 3 respectively of Fig. 1. Fig. Ll is a perspective ofthe spring employed to hold a portion of the edge of the filteringcloth.

1n said drawing, 5 represents the main vessel forming the body of thepercolator. 1t is provided with a cover 6, a syrup chamber 7, a venttube S by which air is permitted to escape from the syrup chamber as thesyrup accumulates therein, a discharge faucet 9 for drawing 0H the syrupfrom the syrup chamber, and filtering devices now to lbe described.

cloth, to escape into the chamber 7 As the weight of the sugar and waterupon the screen 12, may in some cases be excessive, 1 sometimes providethe screen with a central support, which may desirably consist of astandard 13 resting on the bottom of the syrup chamber and covered witha plate 14 arranged immediately under the screen as shown at Fig. 1. lfmade tubular as the standard is in the preferred construction the syrupshould be excluded from it, and this may be done by plates 111 and 15,the former at the top and the latter at the bottom, and the latteraffords means for riveting to the bottom of the syrup chamber. rlheannulus is by preference permanently attached to the main vessel, and inany event the attachment should be such as to prevent any leakage ofwater between it and the wall to which it is attached.

Upon the annulus and screen I place the filtering cloth 16 through whichthe dissolving sugar and water must pass to reach the syrup chamber, andthis cloth is maintained in an extended state upon the screen andannulus by an expansible hoop 17, the nature of which is fully shown inthe drawing. It consists of a flat strip of thin metal, bent intocircular form, with the edge of the metal uppermost, and provided at itsends with nuts 18, having one a right hand and the other a left handthread, and in which nuts is fitted a bolt, one end of which is providedwith a right hand thread and the other with a left hand thread. Byturning this bolt the hoop is expanded or contracted as desired. Thenuts are secured in the hoop by bending its end at right angles as at 19and recessing such bends so that they receive the nuts and permit thelatter to be soldered to them. rlhe bent portions are braced by bendingthe continuations 20 down so that they form a junction with the body ofthe hoop. rEhe cloth 1G is placed loosely upon the screen in an extendedcondition without wrinkles or folds, but has its edges turned up overthe same and secured at intervals to pins 21 extending up from the hoop.By this expanding hoop, the turned up edge of the filtering cloth isforced outward against the wall of the percolator and contines theturned up edge of the iltering cloth irmly against the wall, so that nowater or sugar can find its way outside the hoop. In the small openspace between the ends of the hoop, the cloth may be forced outward in asimple manner by a spring 23 inserted between it and the ends of thehoop as seen at Fig. 2, and in this manner the water is excluded fromthe outside ofthe hoop throughout its entire circumference.

` In the use of the percolator, the filtering cloth is positioned andsecured as described, and the hoop is expanded so as to tighten thecontact between the cloth and the walls of the percolator, and thedesired amount of sugar is then placed upon it. The water is then pouredin on top of the sugar, and the percolation immediately commences andcontinues uninterrupted until the water has all been absorbed, the syrupformed passing down into the syrup chamber from which it is withdrawn asdesired.

I claim 1. A percolator having a permanent screen and a filtering clothabove the screen and resting thereon7 the cloth being secured to andheld extended by an expansible hoop located within the cloth and securedto its edges.

2. A percolator having its filtering cloth attached to an expansiblehoop located within the cloth and acting to force it outward closelyagainst the inner walls of the percolator, and a screen locatedimmediately below and supporting the cloth.

3. The combination in a percolator and with the filtering cloth and ascreen located immediately below the cloth and supporting the same, ofan expansible hoop located within and secured to the edges of the clothand thus adapted to hold the cloth tight against the inner walls of thepercolator.

4. A percolator, the filtering devices whereof consist of a tilteringcloth, an expansible device secured to the cloth and whereby the edge isdistended and caused to make a tightjoint with the inner wall of thepercolator, and an openwork screen located immediately below the clothand supporting th same.

5. A percolator, consisting ol' a vessel 5, having a syrup chamber atthe bottom, iltering devices consisting of a iiltering cloth, anexpanding ring secured to the cloth and serving to hold theclothextended and cutting off the water and sugar from the syrup chamber, ascreen located below the cloth and supporting the same and said holdingmeans above the syrup chamber, and a tube venting said syrup chamber.

6. A percolator, consisting of a vessel 5, having a syrup chamber at thebottom, filtering devices consisting of a filtering cloth,

an expanding ring secured in and holding the cloth extended and cuttingofi' the water and sugar from the syrup chamber, a screen immediatelybelow the cloth and acting to support the same above the chamber, a tubeventing said syrup chamber and a standard under the center of saidsupporting means. CHARLES A. STELLE. Witnesses H. M. MUNDAY, PEARLABRAMS.

